i think setting up t/a would be the last you do in this tuning process , i think of it as more of a band aid then a tuning step ,
Switch at the amp if that's easiest to reach. It won't make any difference.Ok so I've been meaning to try this but I had one doubt and kept putting off. Maybe this is a stupid question but I'm willing to take the chance!
I currently have 4 inch comps with the supplied crossovers. No problem I can just reverse the phase at the crossover for the mids and the tweets.
I also have 8 inch midbasses under the seats and I use the electronic crossover in my DQX. The dqx doesnt have a phase inverter. So where can I change the polarity of the midbass? Does it matter if I change it at the amp because I don't want to remove my seats.
I know its a dumb question I'm guessing it wouldnt make a difference if its at the amp or at the woofer. I didnt know if the electronic crossover would mess me up somehow.
I've tuned several vehicles and have only ran into what you described once.
The vehicle had speaker wiring issues, several speaker wire splices and solder joints with both active and passive crossovers.
I cleaned up the wiring, removed all splices, confirmed polarity and confirmed solder joint integrity at the passive crossovers.
Once that was done the vehicle would focus.
Nevertheless, it's my understanding that the MS8 wants the enter system to be wired in polarity.
I would run an in phase/out of phase track and note if the focus is the same in phase as out of phase. If so, given you can't change the focus by changing polarity, I would verify the system is wired properly.
Please don't be offended, but the guy with the splices and poor solder joints told me "my wiring is sound". :-DThanks for your answer. I am fairly certain my wiring is sound.
That's not how I read your original post.I should say that I confirmed polarities are correct with the JL audio app on the iPhone. Ran the MS-8 calibration and it sounded terrible. I flipped Polarity on the left side tweeter and midbass, recalibrated and the results are very satisfactory.
If you retuned with the MS8, you should not hear any different between a system wired in absolute phase and one that is not. Although some guys that are better tuners than I would say absolute phase is how a vehicle should be wired with DSP TA/phase correction.I have to say I tried using this method and was not able to hear any difference when only the tweeters, mids and woofers were playing, whether the polarity of one of the drivers was reversed or not.
subterFuse is correct, you could have physical boundary issues (early reflections) in your car still creating phase issues.However I am concerned that something is still off, because I could not get this method to work.
You kind of lost me in the last paragraph, but I will try to find such a track and report back. Any idea where I can find a track like this on the Internet?